Grubel,Herbert G, & Lloyd,P J. (1975). Intra-industry trade: The theory and measurement of international trade in differentiated products. The Mac Millan Press Ltd.
استشهاد بنمط شيكاغوGrubel,Herbert G, و Lloyd,P J. Intra-industry Trade: The Theory and Measurement of International Trade in Differentiated Products. London: The Mac Millan Press Ltd, 1975.
MLA استشهادGrubel,Herbert G, و Lloyd,P J. Intra-industry Trade: The Theory and Measurement of International Trade in Differentiated Products. The Mac Millan Press Ltd, 1975.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.